hrtimer: interrupt took 34243 ns
rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10777 ticks this GP) idle=3f2/1/0x4000000000000002 softirq=11561/11563 fqs=5245 
rcu: 	 (t=10500 jiffies g=5965 q=5)
NMI backtrace for cpu 1
CPU: 1 PID: 8120 Comm: syz-executor033 Not tainted 5.1.0-rc6 #78
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x172/0x1f0 lib/dump_stack.c:113
 nmi_cpu_backtrace.cold+0x63/0xa4 lib/nmi_backtrace.c:101
 nmi_trigger_cpumask_backtrace+0x1be/0x236 lib/nmi_backtrace.c:62
 arch_trigger_cpumask_backtrace+0x14/0x20 arch/x86/kernel/apic/hw_nmi.c:38
 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline]
 rcu_dump_cpu_stacks+0x183/0x1cf kernel/rcu/tree.c:1223
 print_cpu_stall kernel/rcu/tree.c:1360 [inline]
 check_cpu_stall kernel/rcu/tree.c:1434 [inline]
 rcu_pending kernel/rcu/tree.c:3103 [inline]
 rcu_sched_clock_irq.cold+0x500/0xa4a kernel/rcu/tree.c:2544
 update_process_times+0x32/0x80 kernel/time/timer.c:1635
 tick_sched_handle+0xa2/0x190 kernel/time/tick-sched.c:161
 tick_sched_timer+0x47/0x130 kernel/time/tick-sched.c:1271
 __run_hrtimer kernel/time/hrtimer.c:1389 [inline]
 __hrtimer_run_queues+0x33e/0xde0 kernel/time/hrtimer.c:1451
 hrtimer_interrupt+0x314/0x770 kernel/time/hrtimer.c:1509
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1035 [inline]
 smp_apic_timer_interrupt+0x120/0x570 arch/x86/kernel/apic/apic.c:1060
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:807
 </IRQ>
RIP: 0010:do_iter_write+0x0/0x610 fs/read_write.c:940
Code: ff ff e8 43 57 f7 ff e9 4c ff ff ff 49 c7 c7 ea ff ff ff e9 74 ff ff ff 49 c7 c7 f7 ff ff ff e9 68 ff ff ff e8 b1 e7 91 ff 90 <55> 48 89 e5 41 57 41 56 41 55 49 89 f5 41 54 41 89 cc 53 48 89 fb
RSP: 0018:ffff88808900f908 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: ffff888091bfe700 RBX: ffffffff877a4ba0 RCX: 0000000000000000
RDX: ffff88808900fa70 RSI: ffff88808900fa08 RDI: ffff888082b18500
RBP: ffff88808900f938 R08: ffff888091bfe700 R09: ffffed1015d25bc8
R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff888082b18500
R13: ffff88808900fa08 R14: ffff88808900fa70 R15: 0000000000000000
 iter_file_splice_write+0x662/0xbe0 fs/splice.c:745
 do_splice_from fs/splice.c:847 [inline]
 direct_splice_actor+0x126/0x1a0 fs/splice.c:1019
 splice_direct_to_actor+0x369/0x970 fs/splice.c:974
 do_splice_direct+0x1da/0x2a0 fs/splice.c:1062
 do_sendfile+0x597/0xd00 fs/read_write.c:1443
 __do_sys_sendfile64 fs/read_write.c:1504 [inline]
 __se_sys_sendfile64 fs/read_write.c:1490 [inline]
 __x64_sys_sendfile64+0x1dd/0x220 fs/read_write.c:1490
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x440339
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fff34c7a5b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440339
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00008000fffffffe R11: 0000000000000246 R12: 0000000000401bc0
R13: 0000000000401c50 R14: 0000000000000000 R15: 0000000000000000